RE: my NEXT 3D plane
The twist is more of a fun-fly plane. The matrix was designed with 3D in mind. When deciding about an engine, consider the weight. When people put a .60 on a F40 they weighed it down and after the weight handicap, it flew like it had a .40. I looked up the weight of your supertiger and it was significantly more than any other .90 that I saw.
Good luck. I'll keep looking for you.